公开(公告)号：US10790900B2

公开(公告)日：2020-09-29

申请号：US16233940

申请日：2018-12-27

Applicant: Intel Corporation

Inventor： Javier Perez-Ramirez ,  Spencer Markowitz ,  Zoran Zivkovic ,  Nagarajan Muralidharan ,  Ankitkumar Navik ,  Rufeng Meng ,  Richard Roberts

IPC: H04B10/079 ,  H04B10/516 ,  H04N5/455

Abstract: This disclosure describes systems, methods, and devices related to frequency offset tracking in optical signals. A device may identify modulated light received from a light source, wherein the modulated light is received at a frame rate, and wherein the modulated light is associated with pixel clusters. The device may determine light samples based on the pixel clusters, the light samples including a first light sample and a second light sample. The device may determine a vector norm between the first light sample and the second light sample using an oversampling factor. The device may determine that the vector norm is below a threshold. The device may determine a start frame delimiter (SFD) based on the vector norm. The device may demodulate the symbol based on the oversampling factor.

公开(公告)号：US10586394B2

公开(公告)日：2020-03-10

申请号：US15909759

申请日：2018-03-01

Applicant: INTEL CORPORATION

Inventor： Javier Perez-Ramirez ,  Spencer Markowitz ,  Zoran Zivkovic

IPC: G06T19/00 ,  G01S17/10 ,  G06T15/20 ,  G06F3/01 ,  G06K9/62 ,  G02B27/01 ,  G06T7/593 ,  G01S11/12 ,  G01S5/16 ,  G06K9/00 ,  G06F3/147 ,  G06F3/14

Abstract: An example apparatus for depth sensing includes an image data receiver to receive image data from a communication camera and an augmented reality (AR) camera. The apparatus also includes a modulated light detector to detect one or more modulated lights in the image data from the communication camera. The apparatus further includes a representation generator to generate a visual representation of a local image region for each of the detected modulated lights. The apparatus includes a region matcher to match the visual representation for each of the detected modulated lights with a region in the image data received from the AR camera. The apparatus also further includes a distance estimator to estimate a distance between a dual camera receiver and the one or more modulated lights based on a disparity between a position of the visual representation and a position of the matched region in the image data.

公开(公告)号：US20190043261A1

公开(公告)日：2019-02-07

申请号：US15909759

申请日：2018-03-01

Applicant: INTEL CORPORATION

Inventor： Javier Perez-Ramirez ,  Spencer Markowitz ,  Zoran Zivkovic

IPC: G06T19/00 ,  G01S17/10 ,  G02B27/01 ,  G06F3/01 ,  G06K9/62 ,  G06T15/20

Abstract: An example apparatus for depth sensing includes an image data receiver to receive image data from a communication camera and an augmented reality (AR) camera. The apparatus also includes a modulated light detector to detect one or more modulated lights in the image data from the communication camera. The apparatus further includes a representation generator to generate a visual representation of a local image region for each of the detected modulated lights. The apparatus includes a region matcher to match the visual representation for each of the detected modulated lights with a region in the image data received from the AR camera. The apparatus also further includes a distance estimator to estimate a distance between a dual camera receiver and the one or more modulated lights based on a disparity between a position of the visual representation and a position of the matched region in the image data.